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Electric bicycles which run on battery-operated (電瓶) motors are winning over riders of ordinary bikes   41 their speed, quality and environmental advantage.
They were first   42 on 1980s in China, but the selling was not very good. Today, thanks 43  improvements on battery quality, the electric bikes sell well. There are now more than 100 electric bicycle producers in China and 26 million such bicycles were produced in 2011. Japan is another large  44  of such bicycles in the world with a total production reaching 381,721in 2010.
  45 China is one of the largest producers of electric bicycles in the world, the   46  of its producers with mass production (大批量生產) is actually small.
Electric bicycles are still   47 in China. Time is needed for people to become familiar with them and accept them. Each bike’s price of between 2,000 yuan (US $318) and 3,000 yuan (US $477) is still  48  for ordinary citizens (民眾). Although such bikes are quick, safe and 49 to operate, their batteries still have shortcomings (不足). They weigh more than 10 kilograms; their service life is   50  two years and they   51  400 yuan each.
There were more than 450 million bikes in China in 2006. If just one percent of all these bikes are replaced by electric  52  , the market will be very large. And   53  the battery is further improved and the price is    54   , many of us will not be able to keep back from    55  the latest electric bikes
小題1:
A．because ofB．becauseC．towardsD．at
小題2:
A．buildB．builtC．buildingD．to build
小題3:
A．forB．inC．byD．to
小題4:
A．producerB．productionC．produceD．to produce
小題5:
A．ButB．IfC．AlthoughD．When
小題6:
A．buyerB．numberC．priceD．owner
小題7:
A．oldB．tallC．newD．short
小題8:
A．smallB．largeC．expensiveD．high
小題9:
A．easyB．difficultC．hardD．easily
小題10:
A．other thanB．more thanC．overD．less than
小題11:
A．spendB．costC．takeD．make
小題12:
A．carsB．bikeC．onesD．one
小題13:
A．whereB．unlessC．whetherD．if
小題14:
A．increasedB．raisedC．reducedD．lifted
小題15:
A．buyingB．broughtC．to buyD．buy

小題1:A
小題2:B
小題3:D
小題4:A
小題5:C
小題6:B
小題7:C
小題8:D
小題9:A
小題10:D
小題11:B
小題12:C
小題13:D
小題14:C
小題15:A

小題1:根據前后文的關系可知答案為A，表示 由于的意思，在此符合題意。
小題2:本題考查的是一般現在時的被動語態，故選B因為只有B為被動語態。
小題3:thanks to 表示多虧了，符合句子意思，故選D
小題4:只有答案A，符合題意，表示日本也有生產廠家，故選A
小題5:根據上下文的聯系，可知答案為C，表示盡管的意思。
小題6:根據上下文的內容可知答案為B
小題7:根據下文的內容可知答案為C
小題8:價格高，用high，故選D
小題9:根據although，可知答案為A，表示比較容容易，故選A
小題10:根據their batteries still have shortcomings (不足)可知答案為D
小題11:主語為物，表示花費為cost，故選B
小題12:根據上下文內容可知答案為C，表示代替上文的電瓶車，故選C
小題13:根據下文內容可知答案為D，表示假設的意思。
小題14:be+動詞的過去分詞，表示被動語態，故選C
小題15:from為介詞，其后接動詞ing 形式，故選A
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